Fixture keeps losing DMX Signal.

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Fixture keeps losing DMX Signal.

Postby LightingTechie » 29 January 2011, 12:32

Hi,

I am having a problem with my DMX Cable with my XP 64-bit computer.
The cable works fine most of the time but then my fixture (EVL Prospot 250) randomly loses DMX signal, usually after or just before running a cue.

A simple restart of the SweelLight software fixes this but I can't be spending my time restarting the software during a show as I have to concentrate on the presets on the actual console.

I have the drivers installed (1.03) and I have checked all the hardware (DMX cable from fixture to computer, the fixture itself, etc.)

What could this problem be?

Thanks,
Josh.
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Re: Fixture keeps losing DMX Signal.

Postby support » 29 January 2011, 16:10

First thing to do is to use the most recent software (V6.25 or V6.26) (we can not help with older versions).
Then, please tell us if the green led of interface Cable stops flashing or not.
If it stops flashing, you can make the same test without any light plugged to the Cable.
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Re: Fixture keeps losing DMX Signal.

Postby LightingTechie » 29 January 2011, 16:18

I already have V6.25.

My cable has no lights on it, well, I haven't seen any lights on it while using it.
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Re: Fixture keeps losing DMX Signal.

Postby support » 01 February 2011, 10:10

The interface Cable is able to drive the lighting effects, and it has no flashing green led :o
May be dmx output is ok, and green led is dead.
Anyway the most important is the dmx output works.

Your problem might be a "ground loop" problem. Please read this: viewtopic.php?f=15&t=468
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Re: Fixture keeps losing DMX Signal.

Postby LightingTechie » 02 February 2011, 15:16

Can you recommend a cheap opto-isolator I can use?
The ones I have seen are about $200 -$300.
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Re: Fixture keeps losing DMX Signal.

Postby support » 02 February 2011, 15:30

We send you a private message for that.
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Re: Fixture keeps losing DMX Signal.

Postby LightingTechie » 03 February 2011, 19:07

Have you sent one?
Because I haven't received one, the show is next week.
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Re: Fixture keeps losing DMX Signal.

Postby support » 03 February 2011, 19:52

resent.
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Re: Fixture keeps losing DMX Signal.

Postby davidtoro » 04 February 2011, 00:52

what is dmx optical isolation???
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Re: Fixture keeps losing DMX Signal.

Postby support » 04 February 2011, 08:05

A dmx optical isolator is an electronic device designed to transfer dmx signal by utilizing light waves to provide coupling with electrical isolation between its input and output".
viewtopic.php?f=15&t=468 .
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